Re: [Healeys] Cylinder Head Chamber Volume

[john harper via Healeys <healeys@autox.team.net>]

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Harold

It is best to measure this yourself.

You need the valves in then with a small sheet of glass with a hole in it,
if possible, hold this down and fill with paraffin or very light oil using
a 100cc measuring cylinder from a chemist. Fill this up and then pour into
each of the combustion chambers in turn until full then subtract what is
left from 100cc, six times. You might find small differences between
chambers so you may need to average the results. You need glass as this
will be flat.

Best regards

On Thu, 28 Apr 2022 at 18:35, Harold Manifold via Healeys <
healeys@autox.team.net> wrote:

> Hello,
>
>
>
> I am in the final stages of an AH 3000 engine rebuild with some upgrades
> and would like to do a compression ratio check. I have all of the numbers
> needed except for the cylinder head chamber volume. A quick search online
> came up with 52cc=E2=80=99s. The valves were the same for all the Healey =
3000
> engines so the head volume should be the same. Would anyone be able to
> confirm if 52cc=E2=80=99s is a good number?
>
>
>
> Thanks,
>
>
>
> Harold
>
>
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<div dir=3D"ltr">Harold<div><br></div><div>It is best to measure this yours=
elf.</div><div><br></div><div>You need the valves in then with a small shee=
t of glass with a hole in it, if possible, hold this down and fill with par=
affin=C2=A0or very light=C2=A0oil using a 100cc measuring cylinder from a c=
hemist. Fill this up and then pour into each of the combustion chambers in =
turn until full then subtract what is left from 100cc, six times. You might=
 find small=C2=A0differences=C2=A0between chambers so you may need to avera=
ge the results. You need glass as this will be flat.</div><div><br></div><d=
iv>Best regards</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Thu, 28 Apr 2022 at 18:35, Harold Manifold via Heal=
eys &lt;<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</a=
>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px=
 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v lang=3D"EN-US" style=3D"overflow-wrap: break-word;"><div class=3D"gmail-m=
_2139260558230482539WordSection1"><p class=3D"MsoNormal">Hello,</p><p class=
=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal">I am in the f=
inal stages of an AH 3000 engine rebuild with some upgrades and would like =
to do a compression ratio check. I have all of the numbers needed except fo=
r the cylinder head chamber volume. A quick search online came up with 52cc=
=E2=80=99s. The valves were the same for all the Healey 3000 engines so the=
 head volume should be the same. Would anyone be able to confirm if 52cc=E2=
=80=99s is a good number?</p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p=
><p class=3D"MsoNormal">Thanks,</p><p class=3D"MsoNormal"><u></u>=C2=A0<u><=
/u></p><p class=3D"MsoNormal">Harold<u></u><u></u></p><p class=3D"MsoNormal=
"><u></u>=C2=A0<u></u></p></div></div>
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